ValueError: Component ID frekvenspanel_panel was not declared to inherit from Component

[Guytoo42]

I get this error message when I try to compile the example code, do you have any ideas thank you

INFO ESPHome 2024.2.1
INFO Reading configuration /home/homeassistant/.homeassistant/esphome/horloge-cube.yaml...
INFO Generating C++ source...
Traceback (most recent call last):
File "/srv/esphome/bin/esphome", line 8, in
sys.exit(main())
^^^^^^
File "/srv/esphome/lib/python3.11/site-packages/esphome/main.py", line 1041, in main
return run_esphome(sys.argv)
^^^^^^^^^^^^^^^^^^^^^
File "/srv/esphome/lib/python3.11/site-packages/esphome/main.py", line 1028, in run_esphome
rc = POST_CONFIG_ACTIONS[args.command](args, config)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/srv/esphome/lib/python3.11/site-packages/esphome/main.py", line 407, in command_compile
exit_code = write_cpp(config)
^^^^^^^^^^^^^^^^^
File "/srv/esphome/lib/python3.11/site-packages/esphome/main.py", line 192, in write_cpp
generate_cpp_contents(config)
File "/srv/esphome/lib/python3.11/site-packages/esphome/main.py", line 204, in generate_cpp_contents
CORE.flush_tasks()
File "/srv/esphome/lib/python3.11/site-packages/esphome/core/init.py", line 679, in flush_tasks
self.event_loop.flush_tasks()
File "/srv/esphome/lib/python3.11/site-packages/esphome/coroutine.py", line 246, in flush_tasks
next(task.iterator)
File "/srv/esphome/lib/python3.11/site-packages/esphome/main.py", line 184, in wrapped
await coro(conf)
File "/home/homeassistant/.homeassistant/esphome/components/frekvens_panel/display.py", line 40, in to_code
await display.register_display(var, config)
File "/srv/esphome/lib/python3.11/site-packages/esphome/components/display/init.py", line 119, in register_display
await cg.register_component(var, config)
File "/srv/esphome/lib/python3.11/site-packages/esphome/cpp_helpers.py", line 56, in register_component
raise ValueError(
ValueError: Component ID frekvenspanel_panel was not declared to inherit from Component, or was registered twice. Please create a bug report with your configuration.